Asked by Wilfred Frost on Sky News Breakfast whether it is fair to say the UK would not be boosting defence spending if it were not for the US president, Mr Healey said: "No, it's not.".
However, he denied Mr Trump was effectively setting UK government policy, saying the defence spending increase was "very much my decision" and he had been "arguing for some time" that Europe and the UK "needed to do more".
On Wednesday, a Ukrainian government source told Sky News Kyiv has agreed terms with the US on a rare earth minerals deal after Mr Trump demanded reparations for its assistance to Ukraine in the war.
Mr Trump said Mr Zelenskyy will likely visit the White House on Friday - a day after Sir Keir will be there - to sign the deal.
Since returning to power in January, Mr Trump has said Europe needs to spend more on defence - and the US less.
